Fix array('disabled') and array('disabled' => true) working differently.

The shortform should work the same as the longer form with regards to
disabling field locking with SecurityComponent.

Fixes #3734

lib/Cake/Test/Case/View/Helper/FormHelperTest.php

@@ -1307,6 +1307,27 @@ public function testFormSecuredRadio() {
 		$this->assertEquals($expected, $this->Form->fields);
 	}
 
+/**
+ * Test that when disabled is in a list based attribute array it works.
+ *
+ * @return void
+ */
+	public function testFormSecuredAndDisabledNotAssoc() {
+		$this->Form->request['_Token'] = array('key' => 'testKey');
+
+		$this->Form->select('Model.select', array(1, 2), array('disabled'));
+		$this->Form->checkbox('Model.checkbox', array('disabled'));
+		$this->Form->text('Model.text', array('disabled'));
+		$this->Form->textarea('Model.textarea', array('disabled'));
+		$this->Form->password('Model.password', array('disabled'));
+		$this->Form->radio('Model.radio', array(1, 2), array('disabled'));
+
+		$expected = array(
+			'Model.radio' => ''
+		);
+		$this->assertEquals($expected, $this->Form->fields);
+	}
+
 /**
  * test that forms with disabled inputs + secured forms leave off the inputs from the form
  * hashing.

lib/Cake/View/Helper/FormHelper.php

@@ -2797,6 +2797,9 @@ protected function _generateOptions($name, $options = array()) {
  *   Disabling the field using the `disabled` option, will also omit the field from being
  *   part of the hashed key.
  *
+ * This method will convert a numerically indexed 'disabled' into a associative
+ * value. FormHelper's internals expect associative options.
+ *
  * @param string $field Name of the field to initialize options for.
  * @param array $options Array of options to append options into.
  * @return array Array of options for the input.
@@ -2809,6 +2812,12 @@ protected function _initInputField($field, $options = array()) {
 			$secure = (isset($this->request['_Token']) && !empty($this->request['_Token']));
 		}
 
+		$disabledIndex = array_search('disabled', $options, true);
+		if ($disabledIndex !== false) {
+			unset($options[$disabledIndex]);
+			$options['disabled'] = true;
+		}
+
 		$result = parent::_initInputField($field, $options);
 		if ($this->tagIsInvalid() !== false) {
 			$result = $this->addClass($result, 'form-error');